Explain what is distributed cache in mapreduce framework?
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What is a IdentityMapper and IdentityReducer in MapReduce ?
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Explain InputSplit in Hadoop MapReduce?
What is MapReduce?
what are the most common input formats defined in Hadoop?
Explain what are the basic parameters of a mapper?
what is WebDAV in Hadoop?
what is "map" and what is "reducer" in Hadoop?
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Can there be no Reducer?
Which are the methods in the mapper interface?
Map reduce jobs take too long. What can be done to improve the performance of the cluster?
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